Senior Full-Stack Engineer (TypeScript) (m/f/d)

casavi GmbH; München; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Flexible work

Hybrid work

Workation days (40)

Company events

Pension scheme

Childcare allowance

Wellpass discount

Education budget

Job summary

casavi GmbH is seeking a versatile software engineer to own and evolve frontend and backend features in a robust AWS-based stack. You’ll work across TypeScript, Node.js, React, and Mastra AI to deliver scalable, high-quality solutions.

You’ll collaborate with product managers and designers, maintain code quality, and push for architectural improvements while leveraging AI tools for enhanced developer productivity and customer value.

Qualifications

• You know the ins & outs of TypeScript and feel equally at home in the Backend as well as on the Frontend, with the Backend as your main strength.
• You are a power user of AI-based tools (ideally Claude Code) and know how to boost productivity safely and responsibly.
• You know how to use LLMs as components of software architecture to deliver customer value.
• You have experience building cloud applications on AWS.
• You write well-structured, efficient and maintainable code and keep code quality high.
• You have excellent analytical and problem-solving skills and a KPI-driven working style.
• You are a strong communicator with very good English (C1+).

Responsibilities

• You are part of a cross-functional product team responsible for a large share of the AI-based part of our platform, taking over tasks from customers.
• Plan, architect and develop applications within the team’s stack: TypeScript, Node.js, Mastra AI, React, MySQL, Kubernetes, Docker, Git/GitLab on AWS.
• Collaborate with Product Managers and Designers to create high-quality features that delight customers.
• Work with fellow developers to build scalable, reliable software for the platform.
• Contribute ideas to improve our product and developer experience.

Skills

Strong communication

Analytical thinking

Problem solving

KPI driven

Tools

TypeScript

React

Node.js

MySQL

Kubernetes

Docker

Git/GitLab

AWS

Claude Code

Mastra AI

Job description

About the role

Your mission

• You are part of a cross-functional product team responsible for a large share of the AI-based part of our platform—agentic solutions that don’t just improve our customers' daily productivity, but take over full tasks from them.

• You and your team plan, architect & develop applications within the team’s tech stack, which includes TypeScript, Node.js, Mastra AI, React, MySQL, Kubernetes, Docker, Git/GitLab, all running on AWS.

• You work closely with Product Managers and Designers to create high-quality features that delight our customers.

• You collaborate closely with fellow developers to build lasting, scalable, highly available, and reliable technical solutions, ensuring the overall excellence of our software platform.

• You think outside the box and bring your ideas to improve our product or increase our developer experience to the table.

Your profile

• You know the ins & outs of TypeScript and feel equally at home in the Backend as well as on the Frontend and bring your experience to bear in both areas, whether it's complex architectures or the design of single-page applications, with the Backend being your main strength.

• You are a power user of AI-based tools (ideally, have deep experience with Claude Code), and you know how to boost your productivity with them safely and responsibly.

• You know how to use LLMs as components of software architecture and as a means of delivering customer value.

• You have working experience with building cloud applications on AWS.

• You write well-structured, efficient and maintainable code and actively keep the quality of the code base in check.

• You have excellent analytical & problem-solving skills and a solution-oriented & KPI-driven working style.

• You are a strong communicator, and your English is at a very good level (>C1).

Conditions & Benefits

• An open-minded and friendly team working with agile methods—as proven by ourKununu Score of 4,5

• Flexible & hybrid working

• 40 days of workation per year in the EU

• Company events & sports offers

• Corporate benefits

• Company pension scheme

• Childcare allowance

• EGYM Wellpass membership discount

• Diverse development opportunities and a continuing education budget

Position to be filled from